scholarly journals Risk Factor Analysis of Intravesical Recurrence After Laparoscopic Nephroureterectomy for Upper Tract Urothelial Carcinoma

2021 ◽  
Author(s):  
Masato Yanagi ◽  
Tsutomu Hamasaki ◽  
JunJun Akatsuka ◽  
Yuki Endo ◽  
Hayato Takeda ◽  
...  
Keyword(s):  
Urothelial Carcinoma ◽  
Survival Rates ◽  
Urine Cytology ◽  
Rank Test ◽  
Free Survival ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Positive Urine ◽  
Laparoscopic Nephroureterectomy

Abstract Background: One of the major concerns of patients with upper tract urothelial carcinoma (UTUC) treated with nephroureterectomy is intravesical recurrence (IVR). The purpose of the present study was to investigate the predictive risk factors for IVR after laparoscopic nephroureterectomy (LNU) for UTUC.Methods: Clinicopathological and surgical information were collected from the medical records of 73 patients treated with LNU for non-metastatic UTUC, without a history of or concomitant bladder cancer. The association between IVR after LNU and clinicopathological and surgery-related factors, including preoperative urine cytology and pneumoperitoneum time, was analyzed using Cox proportional hazards regression models and the Kaplan–Meier method with log-rank test.Results: During the median follow-up time of 39.1 months, 18 (24.7%) patients had subsequent IVR after LNU. The 3- and 5-year IVR-free survival rates were 76.5% and 74.3%, respectively. In the multivariate Cox regression analysis, positive preoperative urine cytology (hazard ratio [HR]: 3.55; 95% confidence interval [CI]: 1.326–11.327; p=0.011) and prolonged pneumoperitoneum time of ≥ 210 min (HR: 3.40; 95% CI: 1.271–10.692; p=0.014) were independent prognostic factors for IVR-free survival. In patients with positive urine cytology, the Kaplan–Meier method with log-rank test revealed that the 3-year and 5-years IVR free survival rates were 46.3% and 39.7%, respectively, in patients with a prolonged pneumoperitoneum time of ≥ 210 min, which was significantly lower than that in their counterparts (76% and 76%, respectively, p=0.041).Conclusions: In UTUC patients with positive urine cytology, the occurrence of IVR is highly probable when the pneumoperitoneum time of LNU is prolonged (≥ 210 min). Strict follow-up after LNU is highly recommended for these patients.

Colorectal Liver Metastases - Does the Number of Lesions Determine the Sensibility of Resection?

Swiss Surgery ◽  
2000 ◽  
Vol 6 (1) ◽  
pp. 6-10
Author(s):  
Knoefel ◽  
Brunken ◽  
Neumann ◽  
Gundlach ◽  
Rogiers ◽  
...  
Keyword(s):  
Liver Metastases ◽  
Colorectal Liver Metastases ◽  
Rank Test ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Chirurgische Entfernung

Die komplette chirurgische Entfernung von Lebermetastasen bietet Patienten nach kolorektalem Karzinom die einzige kurative Chance. Es gibt jedoch eine, anscheinend unbegrenzte, Anzahl an Parametern, die die Prognose dieser Patienten bestimmen und damit den Sinn dieser Therapie vorhersagen können. Zu den am häufigsten diskutierten und am einfachsten zu bestimmenden Parametern gehört die Anzahl der Metastasen. Ziel dieser Studie war es daher die Wertigkeit dieses Parameters in der Literatur zu reflektieren und unsere eigenen Patientendaten zu evaluieren. Insgesamt konnte von 302 Patienten ein komplettes Follow-up erhoben werden. Die gebildeten Patientengruppen wurden mit Hilfe einer Kaplan Meier Analyse und konsekutivem log rank Test untersucht. Die Literatur wurde bis Dezember 1998 revidiert. Die Anzahl der Metastasen bestätigte sich als ein prognostisches Kriterium. Lagen drei oder mehr Metastasen vor, so war nicht nur die Wahrscheinlichkeit einer R0 Resektion deutlich geringer (17.8% versus 67.2%) sondern auch das Überleben der Patienten nach einer R0 Resektion tendenziell unwahrscheinlicher. Das 5-Jahres Überleben betrug bei > 2 Metastasen 9% bei > 2 Metastasen 36%. Das 10-Jahres Überleben beträgt bislang bei > 2 Metastasen 0% bei > 2 Metastasen 18% (p < 0.07). Die Anzahl der Metastasen spielt in der Prognose der Patienten mit kolorektalen Lebermetastasen eine Rolle. Selbst bei mehr als vier Metastasen ist jedoch gelegentlich eine R0 Resektion möglich. In diesen Fällen kann der Patient auch langfristig von einer Operation profitieren. Das wichtigere Kriterium einer onkologisch sinnvollen Resektabilität ist die Frage ob technisch und funktionell eine R0 Resektion durchführbar ist. Ist das der Fall, so sollte auch einem Patienten mit mehreren Metastasen die einzige kurative Chance einer Resektion nicht vorenthalten bleiben.

Effects of electrical stimulation in the treatment of osteonecrosis of the femoral head

2017 ◽  
Vol 28 (4) ◽  
pp. 434-441
Author(s):  
Salvador Fornell ◽  
Juan Ribera ◽  
Mario Mella ◽  
Andrés Carranza ◽  
David Serrano-Toledano ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Retrospective Study ◽  
Femoral Head ◽  
Core Decompression ◽  
Rank Test ◽  
Time To Recurrence ◽  
Log Rank Test ◽  
Kaplan Meier

Introduction: The aim of this study was to examine whether the use of an internal electrostimulator could improve the results obtained with core decompression alone in the treatment of osteonecrosis of the femoral head. Methods: We performed a retrospective study of 41 patients (55 hips) treated for osteonecrosis of the femoral head between 2005 and 2014. Mean follow-up time was 56 (12-108) months. We recorded 3 parameters: time to recurrence of pain, time to conversion to arthroplasty and time to radiographic failure. Survival was estimated using the Kaplan-Meier method. The equality of the survival distributions was determined by the Log rank test. Results: Implanted electrostimulator was a factor that increased the survival of hips in a pre-op Steinberg stage of II or below, while it remained unchanged if the stage was III or higher. Conclusions: The addition of an internal electrostimulator provides increased survival compared to core decompression alone at stages below III.

Prognostic value of immunohistochemical phenotypes (IP) of 141 operable breast cancer patients (pts) included in phase III trials of adjuvant therapy

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 21040-21040
Author(s):  
R. Trujillo ◽  
E. Gallego ◽  
A. Márquez ◽  
N. Ribelles ◽  
J. Trigo ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cox Regression ◽  
Phase Iii ◽  
Rank Test ◽  
Prognostic Effect ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Phase Iii Trials ◽  
Her 2

21040 Background: Gene expression arrays and IP studies classified breast cancer in three distinct subtypes: basal, HER2/neu and luminal that are associated with different clinical outcomes. Methods: In 141 pts with operable breast cancer, included in phase III trials of adjuvant therapy in our center, immunohistochemical staining was performed on 3μm sections of paraffin blocks, containing tissue-arrays of tumour tissue.A basal phenotype (BP) was defined by negative estrogen receptor (ER) and progesterone receptor (PR) and positive cytokeratin (CK) 5/6 or EGFR immunoreactivity. HER2/neu phenotype as positive c-erb B2 by HercepTest™ and luminal phenotype (LP) by positive ER, PR and CK 7/8 and negative HER-2. Survival curves were calculated by the Kaplan-Meier method. The differences between survivals were estimated using the log rank test. Multivariate Cox regression analysis was used to evaluate any independent prognostic effect of the variables on disease-free survival (DFS). Results: Complete clinical follow-up information was available for 141 pts. The median follow-up period was 52 months (range 1–103 months). During this period, 13.8% pts died from breast cancer and 27.7% pts relapsed. At the time of the primary diagnosis 10.4% of the pts had lymph node negative disease and 89.6% had positive lymph nodes. 50.8% pts received taxane chemotherapy, 7.7% Trastuzumab, 62.3% radiotherapy and 61% pts received hormonotherapy. Positivity for LP was 65.2%, BP 9.9% and Her-2 phenotype 8.5%. 16.3% didn't fit for any of the three subtypes. Median DFS for BP: 24 moths, for LP and Her-2 phenotypes median DFS was not reached. 5 years DFS were; BP: 19%, LP: 63% and Her-2: 56%. Kaplan-Meier survival analyses demonstrated that the presence of a detectable BP was highly significantly associated with a worse DFS compared with the presence of a LP, log rank test (p= 0.0001). Multivariate Cox regression analyses estimated that the prognostic effect of BP in relation to DFS was independent of lymph node, stage and tumor size, HR: 0.12 95% CI (0.05–0.2). Conclusions: We found that expression of BP was associated with poor prognostic in the context of randomized phase III trials. No significant financial relationships to disclose.

Oral (O) versus intravenous (IV) etoposide and platinum in the treatment of extensive-stage small cell lung cancer (SCLC).

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 7597-7597 ◽  
Author(s):  
Scott Alan Dorroh ◽  
Eric R Siegel ◽  
Rangaswamy Govindarajan
Keyword(s):  
Poor Performance ◽  
Rank Test ◽  
Test Results ◽  
Extensive Disease ◽  
Tumor Registry ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Extensive Stage ◽  
Pharmacy Data

7597 Background: Platinum and etoposide chemotherapy is the treatment for patients with SCLC. O etoposide is substituted for IV by many clinicians at twice the dose for bioavailability but the outcome of these subjects has not been studied. To compare the efficacy of O vs. IV etoposide in extensive stage SCLC, a retrospective analysis of subjects treated in the VISN 16 network of 10VA hospitals was undertaken. Methods: Subjects with SCLC diagnosed between 10/1/1996 and 9/30/2010 were identified from the VISN-16 tumor registry. Study was limited to extensive disease by excluding those treated with radiation therapy. Chemotherapy details were obtained from the pharmacy data in the VISN 16 database. Overall survival (OS) was computed as the time in months from the first etoposide issue date to the date of death or last contact. Kaplan-Meier methods were used to compute median OS, and etoposide groups were compared via log-rank test. Results: 300 subjects were eligible for analysis, with median age 67 yrs (range 45-84). 295 deaths were observed during 2,419 total months of follow-up. The median OS of all subjects was 6.3 months (interquartile range (IQR) 2.0-11 months). In addition to platinum, 153 subjects received only O etoposide, 147 received some form of IV etoposide. The median duration (IQR) of therapy for all subjects was 29 (1-110) days; 23 days for those who received any IV etoposide and 43 days for those who received only oral etoposide. The median OS was 7.6 months for those who received only O etoposide vs. 5.4 months for any IV etoposide (P<0.0001). In the latter group, those receiving purely IV etoposide had only 1.5 months’ median OS vs. 8.8 months for those receiving both O and IV etoposide (P<0.0001). Conclusions: Survival of subjects with SCLC treated with O etoposide is comparable to those who received a combination of O and IV therapy. Poor OS for those with only IV therapy may be due to selection bias of poor-performance subjects. [Table: see text]

Comparative study of six cycles versus twelve cycles of adjuvant temozolomide post concurrent chemoradiation in newly diagnosed glioblastoma.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. e13034-e13034
Author(s):  
Menal Bhandari ◽  
Ajeet K Gandhi ◽  
Pramod Kumar Julka ◽  
Chitra Sarkar ◽  
Dayanand Sharma ◽  
...  
Keyword(s):  
Univariate Analysis ◽  
Progression Free Survival ◽  
Extent Of Resection ◽  
Rank Test ◽  
Karnofsky Performance Score ◽  
Free Survival ◽  
Kaplan Meier ◽  
The Impact ◽  
Mib 1

e13034 Background: This study assesses the impact of 6 cycles of adjuvant TMZ (conventional arm) versus 12 cycles (Extended arm) on Progression free survival (PFS), evaluate the toxicity and correlate the outcome with EGFR, P53 and MIB I labelling Index. Methods: Between December 2010 to October 2012, 36 post operative patients of Glioblastoma between age 18-65 years and Karnofsky Performance Score (KPS) ≥ 70 were included. Patients were randomized to receive Radiation with a dose of 60 Gray in 30 fractions over 6 weeks at 2 gray/fraction with concomitant TMZ (75 mg/m2/day) and Adjuvant therapy with either 6 or 12 cycles of TMZ(150 mg/m2 for 5 days, 28 days cycle). Patients were then assessed monthly clinically and imaged with MRI/CT every 3 monthly or when symptomatic. Toxicity was assessed using CTCAE version 3.0. Statistical Analysis was done using SPSS version 17.0.Kaplan Meier method was used for analysis of survival and log rank test was used for assessing the impact of variables on survival. Results: Of 36 patients, 18 patients were treated in each arm. Median age and KPS in both the arms was 47 years and 80 respectively. 44 % patients in the conventional arm and 50% patients in the Extended arm underwent complete surgical resection. 22% patients in the conventional arm and 28% in the extended arm did not complete their intended treatment. Grade ¾ Thrombocytopenia was seen in 16% in the extended arm and 0% in the conventional arm.EGFR, P 53 and MIB 1 >20% was seen in 26%, 45% and 20% patients respectively, overall. Median follow up was 18 months for both the arms (Range 10-23 months).At last follow up,8 patients in each arm had progression. Median PFS was 10 months vs.18.4 months (p 0.47) in conventional and extended arm respectively. On Univariate analysis, patients with KPS ≤ 80 had poorer survival than those >80 (Median PFS 9.5 Months vs. 16.9 Months; p 0.02).Age, extent of resection, EGFR, P53, MIB 1 did not significantly alter survival in the two treatment groups. Conclusions: Our study showed that schedule of extended Temozolomide is well tolerated by patients and tend to have better progression free survival. Further prospective randomized studies are needed to validate the findings of our study.

The Distribution of Yin-Deficient Symptoms and Their Relationship on Survival Rate in Cancer Patients with Yin-Deficiency

2008 ◽  
Vol 36 (04) ◽  
pp. 655-663 ◽  
Author(s):  
Shu-Chuan Lin ◽  
Ming-Feng Chen ◽  
Tsai-Chung Li ◽  
Yu-Ho Hsieh ◽  
Shwu-Jiuan Liu
Keyword(s):  
Survival Rate ◽  
Cancer Patients ◽  
Survival Rates ◽  
Rank Test ◽  
Yin Deficiency ◽  
Rate Analysis ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Product Limit ◽  
Cumulative Probabilities

Yin-Deficiency (YD), representing a status of the human body under lack of nutrition and fluid in traditional Chinese medicine, is commonly seen in late stage of cancer patients. It is not known whether the severity of YD related symptoms/signs can predict the survival rate of cancer patients. This study evaluated the distribution of Yin-deficiency symptoms/signs (YDS) in cancer patients with YD, and investigated whether the severity of YDS can predict the survival rate of cancer patients with YD. From 5 January 2007 to 5 May 2007, we selected 43 cancer patients with diagnosis of YD from hospitalized patients and outpatients. The severity of YD was evaluated by a questionnaire. We further estimated the cumulative probabilities of the survival rates over 4 months since the start of study by the Kaplan-Meier product-limit method, and compared the differences among groups with various severities in each symptom/sign with the use of the log-rank test. The results revealed that, the 3 most common YDS were sleeplessness with annoyance, less or non-coated tongue with or without redness and dry mouth. In the survival rate analysis, only 2 parameters, rapidly small pulse (p = 0.002) and less-or non-coated tongue with paleness (p = 0.017), were found to be related to the decrease of cancer patients with YD. This suggests that, both rapidly small pulse and less-or non-coated tongue without redness may be used as predictors for the estimation of survival rate in cancer patients with YD.

scholarly journals Reoperation rates for symptomatic nonunions in posterior cervical (subaxial) fusions with and without bone morphogenetic protein in a cohort of 1158 patients

2016 ◽  
Vol 24 (4) ◽  
pp. 556-564 ◽  
Author(s):  
Kern H. Guppy ◽  
Jessica Harris ◽  
Jason Chen ◽  
Elizabeth W. Paxton ◽  
Julie Alvarez ◽  
...  
Keyword(s):  
Bone Morphogenetic Protein ◽  
Patient Characteristics ◽  
Rank Test ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Morphogenetic Protein ◽  
Significant Difference ◽  
Spinal Fusions ◽  
Reoperation Rates

OBJECTIVE Bone morphogenetic protein (BMP) was first approved in 2002 for use in single-level anterior lumbar fusions as an alternative to iliac crest grafts. Subsequent studies have concluded that BMP provides superior fusions rates and therefore reduces reoperations for nonunions. The purpose of this study was to determine the reoperation rates for symptomatic nonunions in posterior cervical (subaxial) spinal fusions with and without the use of BMP and to determine if the nonunion rates are statistically significantly different between the two groups. METHODS Between January 2009 and September 2013, the authors identified 1158 posterior cervical spinal fusion cases in the subaxial spine (C2–7) from a large spine registry (Kaiser Permanente). Patient characteristics, diagnoses, operative times, lengths of stay, and reoperations were extracted from the registry. Reoperations for symptomatic nonunions were adjudicated via chart review. Logistic regression was conducted to produce estimates of odds ratios (OR) and 95% confidence intervals (CIs). Kaplan-Meier curves for the non-BMP and BMP groups were generated and compared using the log-rank test. RESULTS In this cohort there were 1158 patients (19.3% with BMP) with a median follow up of 1.7 years (interquartile range [IQR] 0.7–2.9 years) and median duration to operative nonunion of 0.63 years (IQR 0.44–1.57 years). Kaplan-Meier curves showed no significant difference in reoperation rates for nonunions using the log-rank test (p = 0.179). In a subset of patients with more than 1 year of follow-up, 788 patients were identified (22.5% with BMP) with a median follow-up duration of 2.5 years (IQR 1.7–3.4 years) and a median time to operative nonunion of 0.73 years (IQR 0.44–1.57 years). There was no statistically significant difference in the symptomatic operative nonunion rates for posterior cervical (subaxial) fusions with BMP compared with non-BMP (1.1% vs 0.7%; crude OR 1.73, 95% CI 0.32–9.55, p = 0.527) for more than 1 year of follow-up. CONCLUSIONS This study presents the largest series of patients using BMP in posterior cervical (subaxial) spinal fusions. Reoperation rates for symptomatic nonunions with more than 1 year of follow-up were found to be 1.1% with BMP and 0.7% without BMP. There was no significant difference in the reoperation rates for symptomatic nonunions with or without BMP.

scholarly journals Analisis Ketahanan Hidup Lima Tahun Kanker Tiroid yang Dikelola di RSUP Dr. M. Djamil Padang

2013 ◽  
Vol 2 (3) ◽  
pp. 151
Author(s):  
Oktahermoniza Oktahermoniza ◽  
Wirsma Arif Harahap ◽  
Tofriza Tofriza ◽  
Rosfita Rasyid
Keyword(s):  
Thyroid Cancer ◽  
Tumor Size ◽  
Survival Curve ◽  
Rank Test ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Histopathological Type ◽  
Meier Survival Curve ◽  
Gender Type

AbstrakKanker tiroid merupakan kanker yang jarang terjadi, namun kanker tersering pada organ endokrin. Tujuan penelitian ini untuk mengetahui ketahanan hidup lima tahun kanker tiroid yang di tatalaksana di RS Dr. M. Djamil Padang dari Januari 2007 sampai dengan Desember 2011. Metode: Subjek penelitian adalah 117 penderita kanker tiroid yang ditatalaksana di RS Dr. M. Djamil Padang dari Januari 2007 sampai dengan Desember 2011. Data dianalisis dengan pendekatan survival time menggunakan Kaplan-Meier survival curve dan Log rank test. Hasil: Median umur 39 tahun (range, 11 sampai 77 tahun), median waktu follow up 32 bulan (range, 1 sampai 70 bulan), median ukuran tumor 6 cm (range, 1 sampai 16 cm). Didapatkan 100 (85,5%) %) penderita sehat bebas tumor, 7 (6%) penderita kambuh lokal, 1 (0,9%) metastasis jauh serta 9 (7,7%) penderita meninggal. Overall five survival rate pada penelitian ini 92,3%. Faktor umur, ukuran tumor, dan jenis histopatologi berhubungan secara bermakna dengan survival (p 0,000), (p= 0,046) dan (p= 0,000). Sedangkan faktor-faktor jenis kelamin, jenis operasi, dan terapi adjuvan tidak mempunyai hubungan bermakna dengan survival. Pembahasan: Umur, ukuran tumor, dan jenis histopatologi memiliki hubungan bermakna dengan survival. Jenis kelamin, jenis operasi, dan terapi adjuvan tidak tidak berhubungan bermakna dengan survival.Kata kunci: Umur, Ukuran Tumor, Jenis Histopatologi, Survival, Kanker TiroidAbstractThyroid cancer is a rare cancer, but most common in endocrine organ. The purpose of this research is to determine about at five year survival of thyroid cancer which recorded at RS M. Djamil Padang Hospital from January 2007 until December 2011. Methods: Subjects were 117 patients with thyroid cancer be recorded in hospital Dr. M. Djamil Padang from January 2007 to December 2011. Data were analyzed with the survival time using Kaplan-Meier survival curve and log rank test. Result: Median age 39 years (range, 11 to 77 years), median follow-up time of 32 months (range, 1 to 70 months), median tumor size was 6 cm (range, 1 to 16 cm). Obtained 100 (85.5%)%) patients with tumor-free healthy, 7 (6%) patients with local recurrence, 1 (0.9%) distant metastases, and 9 (7.7%) patients died. Five overall survival rate in this study was 92.3%. Factors of age, tumor size and histopathological type was significantly associated with survival (p 0.000), (p = 0.046) and (p = 0.000). While the factors gender, type of surgery, and adjuvant therapy had no significant association with survival. Discussion: Discussion: Age, tumor size and histopathological type has a significant relationship with survival. Gender, type of surgery, and adjuvant therapy did not significantly associated with survival.Keywords: Age, Tumor Size, Type of Histopathology, Survival, Thyroid Cancer

scholarly journals A comparison of the prognostic significance of changes in NT-proBNP levels in HFrEF and HFpEF.

2021 ◽  
Author(s):  
Nishant Sahni ◽  
Umesh Sharma ◽  
Rashi Arora
Keyword(s):  
Regression Models ◽  
Cox Regression ◽  
Survival Rates ◽  
Prognostic Significance ◽  
Rank Test ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Regional Health Care ◽  
Comorbidity Scores ◽  
Blood Pressures

Background: Rising NT-proBNP are associated with reduced survival patients with HFrEF. However, it remains to be conclusively and formally demonstrated that the temporal trend in NT-proBNP level carries prognostic significance in HFpEF. Objective: To determine whether there is an association between rising NT-proBNP levels and 6-month survival in patients with HFpEF and HFrEF. Methods: We examined a cohort of 5203 patients to 5 hospitals in a regional health care system — who had at least one admission to the hospital with diagnoses of heart failure over a 3-year period. Kaplan-Meier survival curves were constructed for patients with downtrending (>25% net decrease), stable or uptrending (>25% net increase) NT-proBNP levels in HF, HFpEF and HFrEF patients. The log-rank test was used to test for differences in 6-month survival amongst the groups. Multivariate extended Cox regression models were constructed for 6-month survival with NT-proBNP as a time-varying covariate. Age, albumin, sex, race, serum creatinine, systolic and diastolic blood pressures and Charlson comorbidity scores at baseline were used as covariates in the model. Separate analyses were done for HFpEF and HFrEF patients. Results: HFpEF and HFrEF patients with up-trending levels had significantly lower 6-month survival rates than patients with downtrending or stable NT-proBNP levels. A doubling of the NT-proBNP level in patients was significantly associated with reduced 6-month survival in patients with in both subgroups of HF, HFpEF and HFrEF (HFpEF-HR: 1.53(1.49-2.57), HFrEF HR: 1.45(1.43-1.48) after adjusting for covariates.

scholarly journals Laparoscopic right posterior sectionectomy versus laparoscopic right hemihepatectomy for hepatocellular carcinoma in posterior segments: Propensity Score Matching Analysis

2018 ◽  
Vol 108 (1) ◽  
pp. 23-29
Author(s):  
J. Rhu ◽  
G. S. Choi ◽  
J. M. Kim ◽  
C. H. D. Kwon ◽  
S. J. Kim ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Propensity Score ◽  
Propensity Score Matching ◽  
Disease Free Survival ◽  
Rank Test ◽  
Free Survival ◽  
Right Hemihepatectomy ◽  
Log Rank Test ◽  
Kaplan Meier ◽  
Right Posterior Sectionectomy

Background and Aims: This study was designed to analyze the feasibility of laparoscopic right posterior sectionectomy compared to laparoscopic right hemihepatectomy in patients with hepatocellular carcinoma located in the posterior segments. Material and Methods: The study included patients who underwent either laparoscopic right posterior sectionectomy or laparoscopic right hemihepatectomy for hepatocellular carcinoma located in segment 6 or 7 from January 2009 to December 2016 at Samsung Medical Center. After 1:1 propensity score matching, patient baseline characteristics and operative and postoperative outcomes were compared between the two groups. Disease-free survival and overall survival were compared using Kaplan–Meier log-rank test. Results: Among 61 patients with laparoscopic right posterior sectionectomy and 37 patients with laparoscopic right hemihepatectomy, 30 patients from each group were analyzed after propensity score matching. After matching, baseline characteristics of the two groups were similar including tumor size (3.4 ± 1.2 cm in laparoscopic right posterior sectionectomy vs 3.7 ± 2.1 cm in laparoscopic right hemihepatectomy, P = 0.483); differences were significant before matching (3.1 ± 1.3 cm in laparoscopic right posterior sectionectomy vs 4.3 ± 2.7 cm in laparoscopic right hemihepatectomy, P = 0.035). No significant differences were observed in operative and postoperative data except for free margin size (1.04 ± 0.71 cm in laparoscopic right posterior sectionectomy vs 2.95 ± 1.75 cm in laparoscopic right hemihepatectomy, P < 0.001). Disease-free survival (5-year survival: 38.0% in laparoscopic right posterior sectionectomy vs 47.0% in laparoscopic right hemihepatectomy, P = 0.510) and overall survival (5-year survival: 92.7% in laparoscopic right posterior sectionectomy vs 89.6% in laparoscopic right hemihepatectomy, P = 0.593) did not differ between the groups based on Kaplan–Meier log-rank test. Conclusion: For hepatocellular carcinoma in the posterior segments, laparoscopic right posterior sectionectomy was feasible compared to laparoscopic right hemihepatectomy when performed by experienced laparoscopic surgeons.

Sign in / Sign up

Export Citation Format

Share Document